AN Anglesey nurse has been arrested on suspicion of attempted murder following the death of an elderly woman at a mid Wales care home.

Dyfed-Powys Police's investigation relates to the woman, who died at a home in Ceredigion.

The registered nurse, believed to be in her 50s, is currently on police bail.

She was arrested on June 9 and questioned by detectives at Caernarfon before being released on bail while police continue with their investigations.

No charges have been brought against her.

Police said relatives of the dead woman were "quite upset".

In the meantime the nurse, who previously lived in the Aberystwyth area, has moved back to her roots in Anglesey.

A police spokeswoman said the allegations were "historical" relating to an incident that happened more than two years ago when the elderly woman died.

A death certificate said the woman died of natural causes and an inquest was not held.

It is believed the allegation was made by somebody working at the home.

Police are due to re-interview the nurse next month.

Dyfed Powys detective inspector Mark Bergmanski said: "This is in the initial stage of the investigation and we don't want to frighten people but it is an allegation regarding a person who used to work in a nursing home.

"She doesn't work in the nursing home or any other nursing home now. The allegation came to light in the last month or so. It is in a very, very early stage and it will take some time for the investigation."

He added police were working with other agencies over the case.

Mr Bergmanski said: "We have to fully investigate it and all the options.

"We are not looking at exhuming any bodies at the moment.

"We have to try to identify potential witnesses."

He added the investigation could take months.

The case follows that of a matron suspended after allegations of abuse made by three members of staff at a North Wales care home.

The 60-year-old former matron was arrested on suspicion of manslaughter and is now on police bail.

A pensioners' body was exhumed as part of the investigation.

The body of 95-year-old William Pettener was removed from his grave at Llanystumdwy cemetery, near Criccieth, on June 2.

A post-mortem investigation carried out by Home Office pathologist Brian Rodgers proved "inconclusive" and police are carrying out further forensic tests.

Retired engineer Mr Pettener died at Bodawen Nursing Home, near Porthmadog, on April 12 this year.